Title :
Design of Bitstream Co-processor for Multimedia Applications
Author :
Yingke Gao ; Huan Ying ; Zhiyuan Xue ; Tiejun Zhang ; Donghui Wang ; Chaohuan Hou
Author_Institution :
Digital Syst. Integration Lab., Inst. of Acoust., Beijing, China
Abstract :
Variable length coding (VLC) is widely used in the entropy codec part of various video codec standards. Its parallelism is difficult to be developed due to its inherent bit-serial characteristic. As it becomes the system bottleneck of real-time video decoding, this paper presents a bitstream co-processor which greatly accelerates the codec of VLC by designing corresponding bitstream instructions. With SuperV DSP as the research prototype, the area cost of the bitstream co-processor only increases by 1.71% while the performance of the application of entropy decoding is improved about 73% on average.
Keywords :
coprocessors; digital signal processing chips; video coding; SuperV DSP; VLC; bit-serial characteristic; bitstream coprocessor design; bitstream instructions; digital signal processor; entropy decoding; multimedia applications; real-time video decoding; variable length coding; video codec standards; Codecs; Decoding; Entropy; Multimedia communication; Standards; Table lookup; VLIW; VLC; bitstream; bitstream instruction; co-processor; multimedia application;
Conference_Titel :
Dependable, Autonomic and Secure Computing (DASC), 2013 IEEE 11th International Conference on
Conference_Location :
Chengdu
Print_ISBN :
978-1-4799-3380-8
DOI :
10.1109/DASC.2013.66
